OG10-143.
Recently discoverer fossil remains strongly suggest that the Australian egg-laying mammals of today are a branch of the main stem of mammalian evolution.....
"are a branch of"不是主谓单复数不一致吗?为什么在这里可以这样表达?麻烦高人解释一下.多谢!
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有谁能帮忙解释一下?
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